Servamp (Race)

Servamps(サーヴァンプ Sāvuanpu), short for servant vampires, are said to be the first original vampire siblings to exist in the world. However, as the story progresses, it's revealed that the Servamps didn't just come into existence, but were rather humans changed into immortal vampires by a certain human hundreds of years ago. There are supposedly only seven Servamps in existence who each represent the seven deadly sins, but it's later revealed that there's the eighth Servamp who even the other Servamps didn't know existed. All of the Servamps have street names and given names, and some also have nicknames. These names were most likely given by the Creator of the Servamps. When they are not serving someone, they are usually referred to by their street name or the sin they represent. All Servamps are able to change into animals. They usually change into their animal forms when exposed to sunlight, though they can freely switch between their human forms and animal forms at will.

Creation
All servamps were originally normal humans who died and then resurrected into vampires. The exact method to create a servamp is not yet revealed. However, according to both Sleepy Ash and Lawless, it's not easy to perform the method. Other than the creator of servamps, people who tried the method ended up with a disastrous result. The attempt would always brought a large scale of suspicious deaths throughout an entire region. No matter what kind of different approaches were made, it always ended up with the practitioner and everyone else died. Even with remote supervision, surveillance records unnaturally vanished, and those who saw the records disappeared as well, including the result itself. For this reason, the method is deduced to be a domain that humans can venture into.

Contract
Servamp is the combination of the terms Servant and Vampire, which means they are vampires meant to serve a master (human). There are four conditions for a human to make contract with a Servamp. The conditions are: Once all four conditions above are fulfilled, the Servamp and their human master, called an Eve, will be connected by a chain that binds the Servamp's neck and the Eve's wrist or ankle. This chain will appear every time the Servamp drinks the Eve's blood. Once the contract is made, the Servamp can only drink the blood of their Eve and their power depends on how strong the will of the Eve flowing in the blood is. If the Eve's will is strong, then the Servamp will get a significant power up. If the Eve's will is weak, then the Servamp will only get weaker. Servamp's dispositions completely change depending on who they contract with, including their reasons for fighting. Servamp's are obliged to listen to their Eve's order, though there are times they can refuse to follow the order even if the Eve forced them. If the Eve begins to feel unsure and even fear their own Servamp's power, their feelings will overflow within their Servamp's mind and the Servamp will lose control of their own power, causing them to gobble up their own Eve whole. So far, the only way to stop the process once the Servamp lost control is from outside interference such as attacking the Servamp several times until the Servamp calms down or forcefully freeing the Eve from the Servamp's body.
 * 1) Gives the vampire a name.
 * 2) Gives the vampire a present.
 * 3) Calls the vampire with their given name when the vampire is in human form.
 * 4) Makes the vampire drink the blood of the human who has done the three conditions above.

Distance Limit
There is a distance limit for the Servamp and Eve when they are separated. It's later revealed that the size of this distance differs for each Servamp individually, depending on when they were created. The oldest Servamp, Sleepy Ash, has the shortest distance limit which is said to be around only a little over 10 meters. The distance limit increases the younger the Servamp is, meaning Tsubaki is able to be seperated from his Eve the largest distance.

If they are separated too long, the consequences are as follows:
 * 1) After 6 hours have passed since they got separated, the Eve's body will experience abnormalities such as numb limbs, palpitation, shortness of breath, nausea, dizziness, headaches, stomach-aches, dry eyes, and dry skin
 * 2) After 18 hours have passed since they got separated, both Eve and Servamp will change into the Servamp's respective animal form.
 * 3) After 24 hours have passed since they got separated, an anomaly is created and the Eve will die.

Contract Item
A Contract Item is an item that an Eve gave to the vampire as a present along with their name. This item constitutes the link between the Servamp and Eve and is the source of the Servamp's power. As long as the trust between Servamp and Eve is strong, the contract item won't be easily destroyed no matter what kind of item it is, though Tsubaki has a power to break the item without severing the trust between the Servamp and Eve. If the contract item is destroyed, a huge amount of Djinn will come out from the Servamp's body and the Servamp will lose their power. Along with losing power, there are changes in the Servamp's behaviour as well from simple to drastic changes. As times passes, the Servamp's body will grow weaker and smaller, which may eventually led to their death.

Temporary Contract
A temporary contract is made when a human completes the first three conditions but has not yet completed the final condition. As the name indicates, this contract is only temporary and will be cancelled as long as the vampire doesn't drink the blood of the human who makes the contract within 24 hours. Until 24 hours have passed, the Servamp and Eve cannot be separated beyond a certain distance, when they are trying to separate, a chain that connects the Servamp's neck with the Eve's wrist or ankle will appear to prevent them from getting separated. The colour of the chain depends on the colour theme of the Servamp.

Sleepy Ash
He is the Servamp that represents Sloth and the oldest of the vampire siblings with the nickname "The Silent Demise". He once had a close relationship with the creator of Servamp, but later decided to kill him after deeming him too dangerous, an action that he later regretted. True to the sin he embodies, Sleepy Ash is lazy and a NEET, having little to no motivation in doing anything unless he is ordered to and mostly spending his time lazing around. His laziness hides his true power as the strongest Servamp and his true feelings for the people around him that are usually manifested as a Black Cat taunting his contradicting actions and words in his mind. Unlike his siblings, he has two animal forms, a small black cat and a giant black lion. He uses claws and the tips of his jacket that he can harden or use to produce spikes to fight with. He is currently contracted with a high-school sophomore, Mahiru Shirota who renamed him Kuro with a yellow cat bell as his contact item. His colour theme is light blue, while Mahiru's is orange.

Old Child
He is the Servamp that represents Pride with the nickname "One Forgotten by the Good Ol' Days". Despite his child-like appearance, Old Child is the second oldest of the vampire siblings. True to the sin he embodies, Old Child has a lot of pride as a vampire, thinking highly of both himself and his race and disliking anyone who simply thinks that Servamps are merely a tool to be used or controlled by humans, stating the vampires are the ones who use humans. He often boasts about himself and thinks he is the most important person and demands to be treated first before everyone else. However, this trait is often overlooked by his childishness as he is easily distracted. His animal form is a bat. He was supposedly contracted with the son of a hot spring lodge owner, Tetsu Sendagaya, who renamed him Hugh the Dark Algernon III or simply Hugh. His contract item is currently unknown, but it was recently revealed that his contract was likely fake and he is actually in league with Tsubaki. His colour theme is dark red while Tetsu's is dark blue.

Doubt Doubt
He is the Servamp that represents Envy. His nickname is "Punisher of the Doubtful". Together with All of Love, he has served the Alicein family for generations after being invited by him. He is a quiet vampire who rarely talks but has quite a short temper when things don't go his way and can be easily tricked. 7 years before the main story, his Eve, who was the wife of the current Alicein householder, got corrupted by his power and the sin he embodies, leading her son to kill her before she could kill his younger half-brother out of jealousy. After the incident, Doubt Doubt was banished from the Alicein household together with his former Eve's son, accompanying him since then. His animal form is a snake. He is currently contracted with the son of his previous Eve, Mikuni Alicein who renamed him Jeje. Both he and Mikuni's colour theme is a sandy yellow.

The Mother
The only female Servamp, she is the Servamp that represents Wrath. She always looks like she's frowning or grouchy, giving other people the impression that she is angry, which fits the sin she embodies. However, despite the sin she represents, she is said to never get angry so easily without a clear reason and always remains calm. She was married to her Eve who was an apple farmer, until he passed away a week before her confinement in C3 due to old age. She is currently contracted with a C3 inventor, Izuna Nobel who renamed her Freya with Izuna's hair as her contract item until it was destroyed by Tsubaki. Her animal form is a wolf. Her colour theme is light purple.

Lawless
He is the Servamp that represents Greed with the nickname "The One and Only". After the death of his previous Eve, Ophelia whom he fell in love with, and his creator at the hand of his oldest brother, Lawless goes against the sin he embodies, never wishing nor wanting for anything as he devalues his own and other people's lives. To cope with his loss, he developed a habit to choose only celebrities as his Eve and then killed them when he got bored of them. He eventually regained his true feeling and desire after overcoming his sadness and came into terms with his loss with the help of his current Eve. He uses a rapier that he made from his scarf to fight. His animal form is a hedgehog. He is currently contracted with a famous young pianist, Licht Jekylland Todoroki who renamed him Hyde with a hand carved dog-tag necklace made by Licht as his contract item until it was destroyed by Tsubaki. His theme colour is gold while Licht's is purple.

World End
He is the Servamp that represents Gluttony and his nickname is "Devour the World". True to the sin he embodies, he has a big appetite, capable of finishing the entire menu of a restaurant. A self-proclaimed rival to his oldest brother, he has a very short temper and is noisy, mostly talking in a loud voice comparable to shouting. He is currently contracted to the head of the Carpediem Mafia family, Niccolo Carpediem. His contract item is currently unknown, but it was presumably recently destroyed by Tsubaki. His animal form is a pig. His colour theme is yellow.

All of Love
He is the Servamp that represents Lust and his nickname is "It All Ends with Love". While he supposedly represents lust, he never shows any slightest bit of interest in any sexual activity. His representation of lust seems to be shown in his habit of trying to strip. He takes children who are abandoned or victims of abuse, turning those whom he couldn't saved into his subclass. He showers all children he saved with love that looks like his way to repent for the sin he embodies. He has been serving the Alicein family for generations, vowing to protect the family and in exchange they accept him and his subclasses to stay with them. He uses a scythe and illusions in battle. His animal form is a butterfly. He is currently contracted with the second son of the Alicein household, Misono Alicein who renamed him Snow Lily with the pocket watch that used to belong to his previous Eve as his contract item until it was destroyed by Tsubaki's subclass, Otogiri. His theme color is pink, while Misono's is violet.

Tsubaki
He is the eight Servamp that represents Melancholy and the youngest of the vampire siblings with the nickname "Who is Coming". He is the unknown Servamp who wasn't supposed to exist. Prior to the main story, the other Servamps never heard of nor had any contact with Tsubaki, and thus, none of them knew of his existence until he introduced himself. Outwardly, Tsubaki always looks cheerful and laidback, inside, true to the sin he embodies, Tsubaki is melancholic, particularly about the death of his creator whom he refers to as "Sensei" and the fact that no one understands him. This led him to develop a deep hatred for his siblings and the world, targeting his siblings one by one to fix the world that he claims to be the will of their creator. In battle, he uses a katana that is capable of nullifying the power of a Servamp, allowing him to break their contract item. Unlike his siblings, all humans that Tsubaki changed into his subclass are immune to sunlight. His animal form is a fox, he currently has no contract item due to having no Eve, and his theme color is red.

Subclass
Servamps have an ability to change a human into a vampire by making a dying human drink their blood. This vampire is called a Subclass. Similarly to how a Servamp is bound to obey their Eve, a subclass is bound to obey the Servamp who changed them.

Weaknesses
Servamps are not without any weaknesses. Even though these weaknesses won't kill them, it's able to momentarily weaken them. So far the known weaknesses are:
 * They automatically changes into their animal forms if exposed to sunlight.
 * They can change back to their human form and fight during daytime if they drink their Eve's blood, but not as strong as during nighttime.
 * They can't swim in flowing water.
 * They'll collapse if they touch holy water for a few seconds, even if it's just a tiny drop.
 * As stated before, if their contract item is destroyed, they'll lose their Djinn and power (and potentially die over time).

Trivia

 * Sleepy Ash is the only Servamp who has never had any Subclass.
 * Old Child has the most Subclass out of all Servamps.
 * Tsubaki is the only Servamp without an Eve.